Dental chair



FIG. 1 is a perspective view of a dental chair.

FIG. 2 is a front elevational view thereof.

FIG. 3 is a rear elevational view thereof.

FIG. 4 is a right side elevational view thereof.

FIG. 5 is a left side elevational view thereof.

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The unshaded surfaces outside of the dash-dot boundary line form no part of the claimed design. 

CLAIM I claim the ornamental design for a dental chair, as shown and described. 